Improvement in



atwt @titre 'JOHN BEAN, or HUDSON, MIC'HLGAN.

Letters Patent No. 109,288, dated November 15, 1870.-

IMPRovEMEN-.r IN Furi-:Rs

The Schedule referred to in these Letters Patent and making part of the same.

To .all 31:74am il may concern Be it known that I,Jo11.\t BEAN, ot Hudson, in the county of Lenawee and Iin the Stute of Michigan, have invented certain new? and `useful Improvements in Tater-Filter; und do hereby deelurc that the follow? ing is :t full, elem', and exact description thereof, reterence heilig had to the accompanying drawing und tothe letters of referenceinni-lied thereon making n part of this specification.

llhe. nature"ot` hiy in\'ention consists in the construction and arrangement ot' u. reversible filter, with :tir-chamber to he applied to tbrcepulnps, :1s will be hereinafter fully set torth. i

In order to enable others skilled in the nrt to which my invention nppertuins to nmke und use the saune, I vill no\\'1i"nceed to describe its construction :unl operation, referring tothe annexed drawing, which represents n side view, part in section, of my lilter.

A represents the filter, which is made conienl ut both ends, ns showh, so that citherend nnrvbe screwed ,on to 4the stalk l.,

The centeuoi' this filter is pneked very close with tine lulu-tz, sund, or pounded glass, so fine that, .it requires at pressure-of thirty feet ot' wuter to work well.

Ou 'either side vet this center Iilling is a, screen, (l, und the ends of the tilt-er is filled with conrser sund or` quartz.

At s suitable point in the stalk B, between the pump and the filter, is formed un air-ellamber C.

As the water or other iluidedesired to be'ltered passes the centerv of the filter, it 1eztvesbehiud,il 1 the v upper end ot' the filter, any filth or impurities that may be in the sume.

By reversing the filter A, ztnd first forcing through the nir which is in the stalk and air-chamber, the dirt is loosened. lhen the walter, following with a. heavy pressure, forces ont this dirt, und then t-he lter goes In testimony that I cl'uiui the foregoing, I have hereunto set in v hund this 1st day ot' July, 1870.

JOHN BEAN. Witnesses (i. I. THOMPSON, Guss. DUNLAUs. 

